Carbon nanotubes for use in a fuel cell, a method for fabricating the same, and a fuel cell using the carbon nanotubes for its electrode are provided. The internal and external walls of the carbon nanotubes are doped with nano-sized metallic catalyst particles uniformly to a degree of 0.3-5 mg/cm.sup.2. The carbon nanotubes are grown over a carbon substrate using chemical vapor deposition or plasma enhanced chemical vapor deposition. Since the carbon nanotubes have a large specific surface area,...

An inkjet printhead assembly includes an elongate support. A plurality of printhead modules is arranged end-to-end along the support. Each printhead module includes a carrier carrying an elongate printhead configured to eject ink. Ends of each carrier define one or more complementary formations so that each adjacent pair of carriers is nested together. The printheads are positioned on the carriers to form a pair of parallel rows of spaced apart printheads with one of the rows being longitudinall...

An object is to enhance the difficulty in decrypting ciphertext. In order to do input into an encryption algorithm that receives plaintext to output ciphertext, a particular plaintext detector for detecting that the plaintext satisfying a predetermined condition is inputted, the particular plaintext detector includes: a receiving part for receiving the plaintext; a counter part for separating a predetermined part from a bit string forming the plaintext into a fixed part and a remaining part into...

An ink jet nozzle arrangement is provided for ejecting ink. The ink jet nozzle arrangement includes a substrate that defines an ink inlet. Integrated circuitry is positioned on the substrate. A nozzle structure is positioned on the substrate and defines a nozzle chamber in fluid communication with the ink inlet and an ink ejection port in fluid communication with the nozzle chamber from which ink can be ejected. An elongate actuator has a fixed end fast with respect to the substrate and a free e...

A pagewidth printhead assembly for an inkjet printer comprising: a body portion for receiving ink from one or more ink sources and distributing the ink along the length of the printhead assembly; one or more integrated circuits extending substantially the length of the printhead assembly, the or each integrated circuit having a plurality of nozzles formed thereon, each of the nozzles being arranged in use to deliver the ink onto passing print media; and an ink distribution member upon which the ...

An interactive gaming system is described in which characters are generated and controlled to model human behavior in an accurate manner. The behaviors of the characters are contextually accurate because the behaviors adapt to accurately reflect the attitudes of the characters toward the user. A database stores relationship data representing the attitudes of the characters. A gaming engine executing on a computer is coupled to the database and receives input representing the user's interaction w...

In a head unit of a printer, a head (5A) has outlet rows (611, 612, 621 and 622) arranged along a first tilt direction and a gap between outlets in the outlet rows (611 and 612) is interpolated with a outlet in the outlet rows (621 and 622) by a slight tilt. A head (5C) adjacent to the head (5A) is tilted in a second tilt direction opposite to the first tilt direction. In the printer, a plurality of dots are formed, being aligned on a piece of printing paper in the first tilt direction by perfor...

Electrode catalyst slurry and a tubular conductive layer with leading wire are adhered on the inner and outside surface of a tubular proton membrane to be heated and pressed, where the leading wire of the tubular conductive layer and a conductive coating are formed into a whole without electroplating while avoiding the characteristic change of the electrode catalyst; and where the leading wire is led along the surface of the membrane with the characteristics of avoiding jamming the spindle space...

A muzzle-loading firearm includes a breech plug for mating, non-threaded engagement with a housing located at the breech end of an axial bore of the firearm barrel. The plug includes a cylindrically-shaped body member having opposite first and second ends and an outer surface between the ends and configured so that when the plug is positioned within the housing, the outer surface is spaced close to the inside surface of the housing to facilitate insertion and removal of the plug from the housing...

A fluid ejection system includes a first fluid ejection head comprising a first nozzle plate that includes a first set of fluid ejection nozzles capable of ejecting first fluid drops and a second fluid ejection head comprising a second nozzle plate that includes a second set of fluid ejection nozzles capable of ejecting second fluid drops. The second nozzle plate is substantially opposing to the first nozzle plate. The first set of fluid ejection nozzles are offset from the second set of fluid e...